James b



(No Model.)

' J. B. PINOH.

COMBINATION ALARM LOOK FOR WINDOWS. No. 401,148. Patented Apr. 9. 18891 4 "1h" M I 5 1 l u l 1 g lil 41 .d WIN Inventor UNITED I STATES ."ArnN'r Fries.

.TAHES B. FINCH, OF NEIVARK, NEIV JERSEY, ASSIGNOR OF ONE-HALF, BY MESNE ASSIGNMENTS, TO THOMAS \V. HARRIS, HENRY R. KILLALY, AND

HUGO S. MACK.

COMBINATION ALARM-LOCK FOR WINDOWS.

SPECIFICATION forming part of Letters Patent No. 401,148, dated April 9, 1889.

Application filed February 23, 1888. Serial No. 265,043. (No model.)

To all whom, it may concern:

Be it known that I, JAMES I). FINCH, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Combination Alarm- Locks for \Vindows, of which the following is a specification.

This invention relates to improvements in the construction of automatic window-locks combining the triple functions of a sash- Iifter, burglar-alarm, and look.

In order that the public may fully understand the nature of my invention, and those who are skilled. in the mechanic arts may be enabled to construct and apply the same, I will describe it, as follows, to wit:

Referring to the drawings accompanying this application, Figure 1 is an inside View of the lower sash of a window having my coinbination-lock L, screwed or otherwise secured to the bottom of the sash A, showing the lift 72., hammer (7, (ready to fall upon the fulminat-ing or percussion cap 0,) and loop E, firmly fastened to the sill 8*. Fig. 2 is a plan view of the back or under side of the lock, showing the three separate pieces of casting, B, C, and 71; also showing the small flat spring S,which secures the small casting n in its place; also showing the hook forming an integral part (on the under side) of the lift 72, which passes into the loop E, Fig. 1, and locks the sash A. Fig. 3 represents the internal arrangement of the lock L, in which 0 is the outer shell. (Z is the hammer. S is the flat spring which operates the hammer. h is the underside of the lift, showing the locking-hook h", forming a part of the lower end thereof. Fig.4 is the under side of plate 13, showing the catchplate or stop 72, that holds the hammer (I in the lifted position shown at Figfl, (cocked) ready to fall upon the percussion-cap O by the reacting force of the spring S, (see Fig. 3,) when the hammer (I is set free from being 5 ipported on the shouller or rabbet V, near the upper end of the stop or catch n, (see Fig. 4,) by the pressure upon said catch 11 of the projection 2 on the swinging lift 71. This pressure upon the catch it forces it outward against the short flat spring S. The hammer when released falls into the position shown in Fig. When the hammer is neat raised, the spring S throws the catch or stop plate n back into the position shown at Fig. 4, ready to receive and hold said cook or hammer d in the recess V until again set free, as aforesaid, to discharge the cap 0. The lift h hangs on two bearings orlugs, U U, as shown at Fig. 3, so that it will (slightly) swing in and out, so that the hook 71 will fall by its own gravity into the loop E and automatically lock the sash A; and by simply taking hold of the thumb-piece N, Fig. 1, and lifting upward you will throw the foot of the lift IL outward and free the locking-hook from the loop E and raise the sash A without disturbing the alarn'i-connections of the lock. The projection 1, Fig. at, rests upon the under side of the lift it at the dotted line 1, Fig. 3, (when the lock is put together,) to keep the lift 71. in position. hen the sash is lowered, as shown at Fig. 1, the hook forming an integral part of the lift falls by its own gravity into the loop E (which is firmly secured to the sill S and locks the window, and in case a burglar attempts to lift the sash from the outside it draws the lower end of the lift h inward, which causes the lift to press upon the catchplate or stop 12, Fig. 4, and set the hammer free to fall and discharge the large percnssion-cap O with the full force of the spring S, Fig. 3, which gives the desired alarm to the occupants of the house.

Having thus set forth the several parts of my invention, what is claimed as my improvement in burglar-alarm locks for windows is 1. In an automatic window-lock, the combination of the outer shell, C, back plate, B, therefor, the hammer (I, located within said shell, flat spring S, arranged in the shell for operating said hammer, the catch or stop 12, located in a slot in the back plate and serving to support the hammer, spring S, arranged in back plate transverse to the catch and acting thereon, and the swinging lift- 71,

hung in the shell substantially as delower end, the loop E on the Window-sill adapted to be engaged by said hook, the spring-actuated hammer located Within the outer shell, and the catch or stop in the slotted back plate for temporarily supporting said hammer, substantially as described.

3. 'lhe'eombination of the outer shell, C, having projection 13, formed to receive a percussion-cap, O, the slotted back plate, B, of the shell, the oscillating lift 71/, having hook h, lugs U U, on which it hangs in shell C, and projection 2, the hammer (I, located Within the shell, so as to be capable of falling uptn cap 0, its actuating-spring likewise situated within shell 0, the' stop win the slotted back plate having shoulder V, and the spring S, fixed in the back plate transverse to said stop JAMES B. FINCH.

\Vitnesses:

WILLIAM RIGBY, JAMES P. MCLEAN. 

